Glossary, acronyms....

src/Glossary.tex

@@ -67,7 +67,7 @@
 {GPL}{GPL}{GNU General Public License}
 
 \newacronym[
-	description={Simplified General Perturbations models apply to near earth objects with an orbital period of less than 225 minutes. Simplified perturbations models are a set of five mathematical models (SGP, SGP4, SDP4, SGP8 and SDP8) used to calculate orbital state vectors of satellites and space debris relative to the Earth-centered inertial coordinate system. This set of models is often referred to collectively as SGP4 due to the frequency of use of that model particularly with \gls{TLE} sets produced by NORAD and NASA. These models predict the effect of perturbations caused by the Earth's shape, drag, radiation, and gravitation effects from other bodies such as the sun and moon. See also: \gls{SDP}.%
+	description={Simplified General Perturbations models apply to near earth objects with an orbital period of less than 225 minutes. Simplified \glspl{perturbation} models are a set of five mathematical models (SGP, SGP4, SDP4, SGP8 and SDP8) used to calculate orbital state vectors of satellites and space debris relative to the Earth-centered inertial coordinate system. This set of models is often referred to collectively as SGP4 due to the frequency of use of that model particularly with \gls{TLE} sets produced by \gls{NORAD} and \gls{NASA}. These models predict the effect of \glspl{perturbation} caused by the Earth's shape, drag, radiation, and gravitation effects from other bodies such as the sun and moon. See also: \gls{SDP}.%
 			\footnote{\cite{enwiki:Simplified_perturbations_models}}
 		}]
 {SGP}{SGP}{Simplified General Perturbations}
@@ -78,6 +78,22 @@
 		}]
 {SDP}{SDP}{Simplified Deep Space Perturbations}
 
+\newacronym[
+	description={is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and protection for Canada and the continental United States.%
+			\footnote{\cite{enwiki:NORAD}}
+		}]
+{NORAD}{NORAD}{North American Aerospace Defense Command}
+
+\newacronym[
+	description={is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research.%
+			\footnote{\cite{enwiki:NASA}}
+		}]
+{NASA}{NASA}{National Aeronautics and Space Administration}
+
+
+%%%
+% Acronyms without citations.
+%%%
 \newacronym[description={hertz.}]{Hz}{Hz}{hertz}
 \newacronym[description={kilohertz.}]{kHz}{kHz}{kilohertz}
 \newacronym[description={megahertz.}]{MHz}{MHz}{megahertz}
@@ -132,7 +148,7 @@
 
 \newglossaryentry{stvid}
 { name={stvid},
-	description={\Gls{satellite} tools video application for acquiring and processing sky images%
+	description={\Gls{satellite} tools video application for acquiring and processing sky images.%
 			\footnote{\url{https://github.com/cbassa/stvid}}
 		}}
 
@@ -147,6 +163,12 @@
 	description={a setup of equipment such as computers, cameras, \glspl{SDR}, antennas, and receivers, located on Earth, observing space.
 		}}
 
+\newglossaryentry{SatNOGS DB}
+{ name={SatNOGS DB},
+	description={is an effort to create an hollistic, unified, global database for all artificial objects in space (\glspl{satellite} and spacecrafts). Users can view and export the data, contribute to it, or connect applications using an API. It is part of the \gls{SatNOGS} project.%
+			\footnote{\url{https://db.satnogs.org/}}
+		}}
+
 \newglossaryentry{SatNOGS}
 { name={SatNOGS},
 	description={Open Source global network of \gls{satellite} ground stations.%
@@ -242,9 +264,13 @@
 			\footnote{\cite{enwiki:Orbit}}
 		}}
 
+\newglossaryentry{perturbation}
+{ name={perturbation},
+	description={is the complex motion of a massive body subjected to forces other than the gravitational attraction of a single other massive body. The other forces can include a third (fourth, fifth, etc.) body, resistance, as from an atmosphere, and the off-center attraction of an oblate or otherwise misshapen body.%
+			\footnote{\cite{enwiki:Perturbation-astronomy}}
+		}}
+
 % TO ADD
-% SGP4
-% SatNOGS DB
 % RamSat
 % telemetry
 % Grafana

src/SNOUG.bib

@@ -208,4 +208,22 @@
   year             = {2020},
 }
 
+@Misc{enwiki:NASA,
+  author           = {{Wikipedia contributors}},
+  title            = {NASA --- {Wikipedia}{,} The Free Encyclopedia},
+  howpublished     = {\url{https://en.wikipedia.org/w/index.php?title=NASA&oldid=1107567899}},
+  note             = {[Online; accessed 30-August-2022]},
+  modificationdate = {2022-08-30T14:14:27},
+  year             = {2022},
+}
+
+@Misc{enwiki:Perturbation-astronomy,
+  author           = {{Wikipedia contributors}},
+  title            = {Perturbation (astronomy) --- {Wikipedia}{,} The Free Encyclopedia},
+  howpublished     = {\url{https://en.wikipedia.org/w/index.php?title=Perturbation_(astronomy)&oldid=1105431363}},
+  note             = {[Online; accessed 30-August-2022]},
+  modificationdate = {2022-08-30T14:20:52},
+  year             = {2022},
+}
+
 @Comment{jabref-meta: databaseType:biblatex;}

src/Satellites.tex

@@ -16,7 +16,7 @@
 \Glspl{artificial satellite} are rocks with modems.
 
 \section{SatNOGS DB}
-The SatNOGS DB is a database that lists \glspl{satellite},
+The \gls{SatNOGS DB} is a database that lists \glspl{satellite},
 many of which can be tracked by network operators.
 
 \begin{figure}[h!]